A good answer might be:

move $s1,$t3

"Assignment Statement"

It is easy to get confused about the order of operands. The move instruction is intended to be read like an assignment statement of a higher level language:

j = val;

The contents of val is copied into the variable j.

move $s1,$t3

The contents of $t3 is copied into the variable $s1.

QUESTION 7:

(Review:) What is in register $t5 after the following instruction: ori $t5,$0,74